Varnish-rubber.



F. L. PERKINS.

VABNISH RUBBER.

AYYLILATIOR FILED JULY 19, 1913. RENEWED APR. 17, 1914.

1, 1 1 8,576, Patented Nov. 24. 191i 2 SHEETS-SHEET 1 .15 Z4 19 17 Z5 15 Z2 Z0 Z6 16 .25

14 15 5027 IIIIII I l I I Z9 I 1 1 1 57 55 z 55 3 Fig.1.

F. L. PERKINS.

VARNISH RUBBER.

APPLIOATION IILBD JULY 19, 1913. nzmnwsn APR. 17, 1914.

1,1 18,576. Patented Nov. 24. 1914.

2 SHEETS-SHEET 2.

ITE ST S FREDERICK I PERKINS, OF PROVIDENCE, RHODE ISLAND.

VARNISH-RUBBER.

Application filed July 19, 1913, Serial No. 779,989.

To all whom it may concern:

Be it known that I, FnnDnnIcK L..PERKINS, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Varnish-Rubbers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will onable others skilled in the art to which it .appertains to make and use the same.

This invention relates broadly to mechanically operated rotary polishing and abrading devices and has particular reference to that type of such devices which are employed in removing the varnish or dressing from a wood stock for the purpose of refinishing the material.

As its principal object this invention aims to provide a varnish rubber which may be mechanically operated and effectively employed in removing varnish and like coatings from furniture, or similar wooden articles, and may be further employed in dressing wood to impart a smooth surface.

An object of equal importance with the foregoing is to construct the rubber in such manner that the abrading surface of the device will be automatically varied to conform to the contour of the article which is being operated upon.

The above and additional objects are ac complished by such means as are illustrated in the accompanying drawings, described in the following specification and then more particularly pointed out in the claims which are appended hereto and form a part of this application.

With reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it 1s reduced to practice, and throughout the several views of which similar reference numerals designate cor responding parts; Fig. l is a vertical section taken longitudinally of the center section of the rubber, Fig. 2 is a bottom plan view of one of the sections, Fig. 3 is an end elevation of the subject matter of Figs. 1. and 2, Fig. at is an end view of three sections in operative assembled relation to each other, illustrating one of the sections in the position which it assumes when a concave surface is encountered, Fig. 5 is a top plan view of the three sections in operative assembled relation to each other, Fig. 6 is an end elevation illustrating one of the sections in the Specification of Letters Patent.

Patented Nov. 24, 1914.

Renewed April 17, 1914. Serial No. 832,631.

position which it assumes when a concave surface is encountered, and the hinge con nection, and Fig. 7 is a detail perspectite view of the center section frame showing lubricating means attached thereto.

Proceeding now to the description of the drawings, the numerals 10, 11 and 12 designate as entireties, the three sections of the rubbing device which are hingcdly connected, in a manner to be hereinafter described, to form the complete assembled structure of this invention.

Taking up first the detail description of the center section, this element of the invention, best illustrated in Figs. 1, 2 and 3, includes a frame 13, which is formed with a pair of terminal plates 14 and 15 connected at their upper terminals by a horizontally arranged top plate 16, centrally of which is formed a bushing 17. The bushing 17 is provided to receive a shaft 18 which is in practice operatively connected to any suit able motive source by means of a flexible shaft and is designed to communicate its motion to the other rotating rubbing elemcnts to be hereinafter dcsm'ibed.

gcarwhecl 19 which is keyed on the drive shaft 18 is arranged to mesh with an additional pair of gear wheels 20 and 21, which are arranged adjacent the opposite ends of the frame 13 and are respectively keyed on a pair of stub shafts 22 and 23. The upper terminals of the shafts 22 and 23 are jour naled in suitable bearings 24 and 25 carried by the under face of the plate 16 and in longitudinal alincment with a centrally disposed bearing 26 provided for the central shaft 18. The gear wheels 19, 20 and 2l are supported in the desired position and are held against displacement by a plurality of longitudinally alined spaced bearings 27 formed integrally with a supporting plate 28 whicliis secured at its terminals to the inwardly directed portions 29 and 30 of the I'PSI'JCCtlVG members 1 1- and 15. Upwardly extending annular ball bearings retaining cups 31 containing ball bearings 32 are formed on the beveled portion 33 of the rotors 35, 36 and 37 which are secured to the ends of the members 22, 18 and 23.

A pumice stone disk indicated at 38 may be secured to the lower face of each of the members 35, 36 and 37 when the device is to be employed in removing varnish from an article of furniture. It will, of course, be understood in this connection that to impart a fine finish to the wood or to polish the varnish or other coating thereof a disk buffer of any suitable type may be substituted for the members 38. The members 38 may be secured by counter-sunk screws, bolts, or any other fastening devices.

From the foregoing it will be apparent that the center section of the rubber of this invention includes a frame and three rub bing or abraiding rotors which are operatively connected by gear wheels, the central one of which is provided with a drive shaft.

The side sections 10 and 11 are similar in construction to the various elements of the center section, above described, except that they are not provided with a drive shaft, being arra; iged to be rotated by their gear wheels WlllQh mesh with the three gear wheels 19, 20 and 21 of the center section. The upper edge of each of these gear wheels is beveled as indicated at 39 in Fig. 4. This formation of the gear wheels is necessary in order that either of the end sections may swing upwardly with relation to the other two sectionsto permit the abrading surface presented by the various elements 87 to conform to any curved surfaces which may be encountered during the operation of removing varnish from, or polishing, articles of furniture. In order to'provide means .for drawing the adjacent edges of the top plates 16 of the frames of the three sections together when one of the sectionsencounters a curved surface, as illustrated in Fig. 4, there has been provided hinges, designated as an entirety by the numerals (l0 and 41, which are formed on the side 'edges of the end walls of the frames in afline on'the same plane with the upper edge of the vertical portion of the gears 19, 20 and, 21 in order "to facilitate the accurate meshing-of the beveled portion of the gears whencne of the sections encountersa concave surface. These hinges are identical in construction, and only one of them needbe described in detail. lhe details of this-hingelare best illustrated in Figs. 5, 6 and 7, in which the numerals 42 and 43 designate oppositely disposed ears spaced from each other and formed on the side edges ofthe end portions of the frames of the sections. The sideedges adjacent the care 42 and 43 are longitudinally grooved, as indicated at 4.4 to receive theinclined edge 45 of the adjacent section which is provided with an ear 4C6 adapted to behingedly secured betweenthe ears as and 4:8 by means of ahinge pin 47.

Asa means for holding the sections in the proper relationship when operating upon a flat sutface, this invention employs a spring 47 which is mounted upon the hinge pin 47 upon the outer terminal thereof and engages at its free terminals the pins 47" formed on the frames of the sections. The action of this spring will tend to move the section raiser/e which is inclined with relation to the others when operating upon a concaved surface, back into vertical alinement with the other sections when the device is removed from the concave surface.

lit will thus be seen that a hinged connection is provided for the sections of such nature as to facilitate the angular adjustment of one of the sections with relation to the other, which arrangement is particularly desired when a curved surface is to be treated.

It is obvious that the weight of the different sections will assist the springs in returning the angularly disposed section to the desired spaced relationship with the other section during the operation of polishing a flat surface after removing the angularly disposed section from engagement with the concave surface. It will be apparent with reference to Figs. 4: and 6 that when a concave surface is encduntered during the operation of polishing the same, the section or sections operatin on the concave surface will be inclined with relation thereto. When the section or sections are inclined with relation to another section the beveled gear portions of the gears 19;, 20 and 21 Wlll cooperate to provide the desired rotary movement.

As illustrated particularly in Fig. 7, there has been arranged upon each side of the center section an apertured spray pipe 4-8. Each of the pipes 48 are secured to a side bar 49 of the frame of the center section by clips 50 or any other suitable fastening means,'and are connected to a flexible elastic water supply hose l. It is, therefore, obvious that any desired liquid may be sent through the pipe 49 fbr application to the surface which is being operated on.

It is necessary to provide means to prevent the lubricating oil or grease which is to be applied to the gears operating the members 35, 36 and 37 from dripping upon the surface to be polished during the operation of polishing the same, and in this connection this invention employs strips of flexible webbing 52 of any suitable grease proof material which are secured in any suitable manner to the adjacent longitudinal edges of the supporting plates 28 and bridge the space therebetween, as will'be clearly seen with reference to Fig. 4. Webbing sections 53 and 54 are employed to cover the spaces afi'orded between the sections '10, 1,1 and12 whereby a casing is provided for the gears aforementioned. j

lln reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment,

is the most efficient and practical; yet, realizing that the'conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasizethe fact that various minor changes in details of construction,

proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invention, as defined in the appended claims.

What I claim is 1. A varnishing rubbing device including a plurality of, supporting frames, automatic adjusting hinges connecting said frames, a plurality of abrading rotors journaled in each of said frames, gear wheels attached to each of said rotors, all of said gear Wheels adapted to intermesh with each other, and means for operatively connecting said gear wheelsto a power source.

2. In a varnishing rubbing device a plurality of hingedly connected frames, a plurality of abrading rotors journaled in each of said frames, gear wheels operatively connecting the rotors of each of said frames and operatively connecting the rotors of the separate frames'with each other, and means for operatively connecting said first means with a power source.

3. A varnish rubbing device com plurality of hingedly connected rames, a plurality of abrading rotors journaled in each of said frames, gear wheels operatively connecting the rotors of each-of said frames and operatively connecting the rotors of the rising a separate frame with each other, means for" operatively connecting said gear wheels to a power source and means carried by said frames. for preventing a lubricant from the gear wheels from having access to the surface to be treated.

4. A varnish rubbing device comprising a plurality of supporting frames automatically adjusting hinges connecting said frames, said hinges comprising a pair of spaced ears formed on said sections, a single ear operating between the spacedears, a pin connecting said spaced and single ears 2. spring mounted upon said in, pins carried on each section and ada tecf for engagement with the free termina s of said spring, a plu ality of abrading rotors'journaled in each of said frames, a plurality of gear wheels connecting the rotors of each of said frames and operatively connecting the rotors of the separate frames with each other and means for operatively connecting said gear wheels to a ower source.

5. A varnish rubbing device comprisinga plurality of hingedly connected frames, a plurality of abrading rotors journaled in each of said frames, means operatively connecting said abrading rotors, means for con-,1 necting said rotors to a power source and a pair of perforated sprinkling pipes carried upon the opposite sides of the center of said frames.

6. A varnish rubbing device comprising a plurality of hingedly connecting frames, -a plurality of abrading rotors journaled in each of said frames, means for permitting one of the frames to be moved relatively to the other for automatically returning the frame to its normal position, a plurality of ears connecting the rotors of each of said rames and operatively connecting the rotors of the separate frames with each other and means afforded by said gears for allowing their meshing operation when one of the frames is moved relatively to the other of the frames.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK L. PERKINS.

Witnesses:

JOSEPH A. BAOHAND, Josnrn S. GRAY. 

